Auckland FC says a fan was involved in an assault that left a man hospitalised.
Police are considering charges against a 46-year-old man after the attack at Saturday's match against Western Sydney Wanderers.
Eight people were evicted from Mount Smart Stadium and two were arrested - and a visiting Wanderers fan needed facial surgery.
Auckland FC CEO Nick Becker says the accused man doesn't represent the club.
"We've got a great set of hardcore fans - known as the Port - who I think do everyone in Auckland proud. And it's certainly not one of them, it's not someone they would associate with and it's definitely no someone we want involved."
LISTEN ABOVE

Gavin Grey: UK correspondent on Labour's poor showing at the local elections
03:41

Geoff Bertram: energy economist on the Greens calling for the Government to bring down power prices
05:43

Shane Solly: Harbour Asset Management expert on the market reactions to the 'no deal' announcement on the Middle East conflict
03:07